- Ken-ichi Okumura, 2018. Re-evaluation of internal female genitalia in the taxonomy of coelotine spiders.The 50th Annual Meeting of Arachnological Society of Japan. Hiroshima University, Hiroshima.
Ken-ichi Okumura, Naoki Koike & Takafumi Nakano, 2017. True classification of Coelotes plancyi Simon 1880. 49th Annual Meeting of Arachnological Society of Japan. University of the Ryukyus, Okinawa.
Ken-ichi Okumura, Mitsuru Noine & Shin-ya Ohba, 2016. The taxonomy of the coelotine spiders having two retromarginal teeth. 48th Annual Meeting of Arachnological Society of Japan. The Unversity of Tokyo, Kashiwa Campus.
Ken-ichi Okumura, Mitsuru Noine & Shin-ya Ohba, 2015. Taxonomic revisions of the subfamily coelotinae (Araneae: Agelenidae) based on molecular phylogenetic analyses. 47th Annual Meeting of Arachnological Society of Japan. Kyoto Womenfs University, Kyoto.
Ken-ichi Okumura, 2014. Morphological diversity of the epigyne of Coelotes unicatus Yaginuma 1977. 46th Annual Meeting of Arachnological Society of Japan. Nagoya City University, Aichi.
Ken-ichi Okumura, 2013. Boundary lines of the related species included in the subfamily Coelotinae in Kyushu District. 45th Annual Meeting of Arachnological Society of Japan. Faculty of Agriculture, Kochi University, Kochi.
Ken-ichi Okumura, 2012. Importance of the morphological characteristics on the taxonomy of coelotine spiders. 44th Annual Meeting of Arachnological Society of Japan. Yamagata City Health Center, Kajo Central, Yamagata.
Ken-ichi Okumura, 2010. Speciation and geographical variation of coelotine spiders in Nagasaki Prefecture. 42th Annual Meeting of Arachnological Society of Japan. Tokyo College of Conservation and Civil Engineering, Tokyo.
Ken-ichi Okumura, 2009. Variations of the retromarginal teeth of coelotine spiders in Kyushu. 41th Annual Meeting of Arachnological Society of Japan. Miyagi Gakuin womenfs University, Miyagi.
Kenichi Okumura
Presentations in academic conferences